Specifications
The completed ENIAC filled a 30 by 50 foot room and weighed 30 tons. It consisted of 40 panels and was laid out in a U shape, measuring 80 feet across the front.
In terms of parts, the ENIAC utilized around 18,000 vacuum tubes. It had over 500,000 soldered joints, around 70,000 resistors, 10,000 capacitors, and used 150 kilowatts of electricity.
It could functionally be divided into 4 units: arithmetic, memory, input and output, and governing. It had 2 memory aspects: memory for numbers and memory for programming instructions. These instructions would’ve been done via punch card, which would be fed into the ENIAC with the results coming out on a separate punch card.
The machine cost $487,000 in 1941, and would cost almost $11,000,000 to create today.